The first important result of the instinct of gregariousness is that it makes for homogeneity. That is, it is an impulse making primarily for attachment. Each individual tends to become thoroughly assimilated in the life of the group; the group’s ways have a vital meaning to him. Sensitiveness to the behavior of his fellows is heightened, and resistiveness to the suggestions of the herd is lowered. A suggestion from outside is likely to be rejected, and direct experience tends to have little meaning, if its teachings are at variance with the beliefs of the group. Altruism arises; it is a natural product of the situation where the conditions of life are such that each individual is of necessity constantly in the habit of regarding the welfare of others as well as that of himself. Danger from the outside stimulates each individual, and spreads fear through the whole group. The herd huddles together, and each shares in the panic of all. Loneliness at such a time is unbearable. Now man is a social creature, and has the characteristics that result from herd instinct. He tends to become solidified with those of his own kind, and feel uncomfortable when out of touch with them; to be suggestible to the influences of his group, and resistive to the influences of other groups; to feel altruism towards those of his own herd and aversion towards those of other herds; to be aroused when the nation is threatened, and huddle in the group in the face of danger. All these characteristics under the proper stimuli are manifested by patriotism. A definition of patriotism from the standpoint of attachment to the group is that of Sumner: “Patriotism is loyalty to the civic group to which one belongs by birth or other group bond. It is a sentiment of fellowship and coöperation in all the hopes, work, and sufferings of the group.[5]